-<!-- $PostgreSQL: pgsql/doc/src/sgml/func.sgml,v 1.499 2010/02/01 03:14:43 itagaki Exp $ -->
+<!-- $PostgreSQL: pgsql/doc/src/sgml/func.sgml,v 1.500 2010/02/01 15:38:21 rhaas Exp $ -->
<chapter id="functions">
<title>Functions and Operators</title>
</table>
<para>
- See also <xref linkend="functions-aggregate"> about the aggregate
- function <function>string_agg</function>.
+ See also the aggregate function <function>string_agg</function> in
+ <xref linkend="functions-aggregate">.
</para>
<table id="conversion-names">
</note>
<para>
- The aggregate functions <function>array_agg</function>
+ The aggregate functions <function>array_agg</function>,
+ <function>string_agg</function>,
and <function>xmlagg</function>, as well as similar user-defined
aggregate functions, produce meaningfully different result values
depending on the order of the input values. This ordering is